POST http://127.0.0.1:8080/abcd?t={{random=%random%}} http/1.1
Host: {{host=nunjucks.bootcss.com}}
User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:70.0) Gecko/20100101 Firefox/70.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate, br
Referer: https://{{referer=nunjucks.bootcss.com}}/
Connection: keep-alive
Upgrade-Insecure-Requests: 1
Pragma: no-cache{{ip=1.2.3.4}}
Cache-Control: no-cache-{{username}}
TE: Trailers

a=1&b=2